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Turbidity measurements in Alameda Creek and selected tributaries: August through December 2007

Turbidity measurements in Alameda Creek and selected tributaries: August through December 2007. Alicia N. Gilbreath and Lester J. McKee San Francisco Estuary Institute. Turbidity measurement. Sadar, Hach Co., 2005. Turbidity WQ objective.

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Turbidity measurements in Alameda Creek and selected tributaries: August through December 2007

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  1. Turbidity measurements in Alameda Creek and selected tributaries: August through December 2007 Alicia N. Gilbreath and Lester J. McKee San Francisco Estuary Institute

  2. Turbidity measurement Sadar, Hach Co., 2005

  3. Turbidity WQ objective “Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Increases from normal background light penetration or turbidity relatable to waste discharge shall not be greater than 10 percent in areas where natural turbidity is greater than 50 NTU.” - San Francisco Regional Water Quality Control Board (SFRWQCB) Basin Plan (2007), Turbidity water quality objective (3.3.19)

  4. Thresholds used in analysis 10 NTU > 50% exposure time 25 NTU > 20% exposure time and 50 NTU > 10% exposure time Klein and Trush (in prep), in McBain and Trush, 2007

  5. Results

  6. Results compared to thresholds

  7. Recommendations • Conduct a bioenergetics study in areas where turbidity may impact the fish. • Investigate sources and management options for inputs into Arroyo Mocho.

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